Actually, after typing that out, I remembered where I got the name. Castle Crashers!

I also remembered that I actually made a BrikWars unit that would be perfect for that die, "The Many Faces of Mr. White". Using the three heads from the mime minifig (and the vampire), you'd roll a d4 at the start of each turn to see how he'd act. He'd give the nearest minifig a hug if happy, stand in place and cry if sad, run away if scared, and attack the nearest minifig if bloodthirsty.

I probably would've used him at some point if I actually played any Brikwars.